Lock-strike.



WITNESSES (l wumow fil J. M. MATHER & J. F. STEELE.

LOCK STRIKE.

APPLICATION FILED 00125, 1912.

Patented June 9, 1914.

J. M. MATHER & J. F. STEELE.

LOOK STRIKE.

APPLICATION IILED 00125, 1912.

A '2 52 12 WITNESSES LU U MM 910 Patented June 9, 1914.

2 SHEETS-SHEET 2.

1? INVENTORJ W Ummey UNITED STATES P iTENT OFFICE.

JOSIAH M. IVIATHER AND JOHN FRANK STEELE, OF ANNISTON, ALABAMA.

LOCK-STRIKE.

Specification of Letters Patent.

Application filed October 25, 1912. Serial No. 727,751.

To all whom it may concern:

Be it known that we, JOSIAH M. MATHER and JOHN FRANK STEELE, citizens of the United States, residing at Anniston, in the county of Calhoun and State of Alabama, have invented certain new and useful Improvements in Lock-Strikes; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to door locks, and more particularly to lock strikes.

The objects of the invention are to provide an improved lock strike and means for securing and holding it in position for engagement with the locking bolt of a door lock or the like, Without using bolts or screws as a securing means, and to adapt the lock strike to be easily removed, in order that a door or drawer, the key to which has been mislaid or lost, may be opened without being unlocked and without injuring the framework around or about the door lock or lock strike and the parts afterward restored to normal position with the door looked as before; and further, to provide a lock strike of the character referred to adapted to be used in connection withany ordinary door, trunk, desk, or other lock, and means for locking the same, so that any door of a house or other structure, such as a trunk or the drawers of a desk, may be locked in the usual manner, and in the event of the key thereto being mislaid or lost, may be opened without damage or injury to the door, lock, or building with which the device is used, and when opened may be again locked, when a suitable key is provided, without cost, trouble, or unnecessary labor, and without in any way interfering with the use of the regular lock key or a pass key.

The invention will first be hereinafter more particularly described, with reference to the accompanying drawings, which form a part of this specification, and then pointed out in the claims at the end of the description.

In said drawings, Figure 1 is a detail perspective view of a portion of a door and door-frame or casing having an ordinary door lock together with our improved lock strike and strike locking mechanism applied thereto; Fig. 2 is a detail perspective View of a portion of a door with an ordinary door lock thereon; Fig. 3 is a detail perspective view illustrating our improved lock strike and strike locking device applied to a door- .frame or casing; Fig. 4t is a perspective view of the lock strike detached; Fig. 5 is a cross section of a door and adjacent partsof the door-frame, the section being taken on the line 5-5 of Fig. 1; Fig. 6 is a side elevation of a hroken-away portion of a door-:t'rame with our improved lock strike and strike locking device applied thereto, parts thereof being indicated in dotted lines; Fig. 7 is a perspective view of the lock strike detached and viewed from the back or inner side thereof; Fig. 8 is a perspective view of the bolt used in connection with the lock strike locking mechanism; Fig. 9 is a detail cross section, taken on the line 9-.) of Fig. 6 looking in the direction of the arrow, and Fig. 10 is a perspective view of the lock used for locking the lock strike.

Referring to said drawings, in which the same reference letters are used to denote corresponding parts in different views, the letter A may denote a door provided with an ordinary door lock having a bolt and latch adapted to engage a lock strike in the usual manner. Said door lock forms no part of our present invention and need not be described. The letter B denotes our improved lock strike which is adapted to be removably secured to the door-frame C, or other structure and locked in position to permit the bolt or bolt and latch of an adjoining door lock to enter an opening or openings therein and to be easily removed and replaced when desired Without using bolts or screws or other permanent fastenings. As shown, the strike plate is provided with suitable openings to receive the boltand latch a and c respectively, of an ordinary door lock, and, with a guard plate I) and back plate I) having apertured lugs 12 thereon for engagement with the sliding bolt 0 of a locking device E, for locking and holding the strike in a fixed position for engagement with the bolt or bolt and latch of an ordinary door lock or the like. In the form shown the guard flange b of the lock strike and the plate b project from the back or inner side of the strike plate substantially parallel with each other, one at each edge or margin, on opposite sides of the openings in the strike plate, these openings being arranged substantially at right angles to the openings through the lugs b on the lock strike.

Patented June 9, 1914.1

' frame close up against the back plate 6 of metal, denoted by the letter F, may be driven trouble and inconvenience incident to remov- The door-frame or casing C is suitablyl mortised or recessed to receive and house in said recess a device having a sliding bolt actuated by a key for engaging the apere tured lugs 39 of the lock strike and locking the latter in a fixed position for the engage-. ment therewith of the locking bolt or bolt and latch of adoor lock or the like. Such locking device for example may consist of an ordinary tumbler lock E, having a slidingbolt e adapted to be actuated by a key in the usual way for throwing said bolt into and out of engagement with the apertured lugs Z2 on the lock strike. Any suitable locking device may be employed, the device shown being an ordinary tumbler lock, which forms no part of the present'invention and need not be further described. The lock E, which may be termed a secondary lock, may be secured within the mortise or recess in any proper manner, for example, by screws or nails driven into the wooden the lock, as shown in Figs. 6 and 9 of the drawings, and to prevent the lock from coming out of the recess, nails or thin strips of intothe wooden framework so as to rest snugly against the end flange e of the plate 6 The strike plate and guard flange thereon are madelarge enough to cover the outer portion of the mortise, which must necessarily be cut into the frame or casing sutliciently to permit the insertion of a lock or other means for locking the lock strike in its normal position. The lock strike is slidably fitted in a recessed part of the door-. frame or casing and secured against sidewise movement by means of metal plates F secured to the framework by screws or other fastenings and overlying the top and bottom edges or marginsof the strike plate, which may slide in the guide-ways thus provided between said plates and the door-frame, as shown more clearly in Figs. 3 and 6 of the drawings.

The utility and advantages of our improved lock strike are obvious. In case the lock key'is mislaid, lost, or broken off in the lock, or left on the opposite side of the door, the door may be opened by simply unlocking/the lock strike and swinging the door on its hinges, thereby withdrawing the lock strike from its position on the doorframe, and. when opened and a suitable key is provided for the door lock, the lock strike may be again restored to its normal position and the door again locked, without the ing screws or bolts and without damage or injury to the door-frame or casing; and the use of this lock strike does not in any way interfere with the use of a pass key, or the regular lock key. It may be used with various kinds of locks of well known or any.

suitable key, and the door opened, thus af fording greater protection against burglary and the like than the ordinary lock strike. This is due to the fact that it is not secured to the frame by means of nails or screws, as

is the case with an ordinary lock strike, and is confined between the edge of the door and the door-frame, and securely locked in place so that it can be removed only when it is unlocked and the door, drawer or the like in connection with which it is used thrown open. When used in connection with a hotel, large-office building, or the like, the immense value of'our improved lock strike becomes apparent, for if the strike is used on the side of the door facing into the main hall, it is clear that every room may be entered by a single key in the possession of the proprietor or keeper of the hotel or otlice building, and yet each room may have its own individual key, which will unlock the door to that particular room only. This avoids the necessity for carrying around a large number of keys when the rooms are to be cleaned, and is of incalculable value in case of fire, in that it will greatly reduce the danger and prevent loss of life that might result from using doors that are locked in the usual way.

It will be understood, of course, that our invention is not limited in its application to doors, but may be used in connection with any swinging or sliding door or similar structure designed to be locked and in connection with which a lock strike is used, and that various changes may be made in the illustrated embodiment of our invention without departing from its spirit and scope.

Having thus described our invention what we claim as new and desireto secure by Letters Patent of the United States is 1. A look strike consisting of a strike plate having an opening to receive a bolt and a lug on the back of said plate having.

an opening therethrough to receive a bolt extendlng at an angle to the first named bolt for locking said lock strike, whereby a door or the like in looking engagement with said I,

lock strike may be opened without being unlocked by unlocking the look strike.

2. A lock strike consisting of a strike door lock and plates or flanges projecting from the inner side thereof substantially at right angles thereto on opposite sides -of said openings, one flange having lugs thereon with openings therein arranged substantially at right angles to the openings in the strike plate, whereby a locked door may be opened by merely unlocking the lock strike.

1 2 0 plate havlng openings therein to recelve the locking-bolt and knob-latch of an ordinary 3. A look strike consisting of a strike plate having a marginal guard flange extending from the inner side thereof, and a plate extending from the same side substantially parallel with said flange and having apertured lugs thereon adapted to receive a locking bolt extending perpendicularly to openings in the strike plate, whereby the latter may be locked in position to receive the locking bolt of a door lock.

4. A movable lock strike, adapted to be slidably fitted upon a door frame and consisting of a strike plate having a marginal guard flange extending from the inner side thereof, and a plate extending from the same side substantially parallel with said flange and having apertured lugs thereon adapted to receive a locking bolt whereby said strike plate may be locked in position to receive the locking bolt of a door lock.

5. A look strike consisting of a strike plate having a marginal guard flange extending from, the inner side thereof, a second plate extending from said inner side substantially parallel with said flange and having apertured lugs mounted thereon and at right angles thereto, and adapted to receive a locking bolt whereby said strike plate may be locked in position to receive the looking belt of a door lock.

6. A lock-strike slidably fitted upon a door-frame and having two adjacent bolt engaging slots, means for locking said strike in position, to be engaged with the locking bolt of the door, together with means for unlocking said strike whereby the door may be opened without retracting the lock bolts, by unlocking said strike.

7. A lock strike having an apertured strike plate with back plates extending substantially at right angles thereto, one of said back plates having a lug thereon with an opening therein arranged substantially at right angles to the opening in said strike plate.

8. A lock strike having a strike plate with back plates thereon extending substantially at right angles thereto, one of said back plates having lugs thereon with openings therein arranged substantially at right angles to the openings in the strike plate.

9. A lock strike having a front or strike plate apertured for engagement with alocking bolt protruding from the edge of a door or the like arranged to sweep across the front of the strike plate, said strike being bodily movable and having an eye thereon and a locking bolt extending substantially at right angles to the first named bolt and adapted to engage said eye.

10. A lock strike having means thereon for engagement with two adjacent locking bolts protruding at an angle to each other, one from a door lock and the other for locking said strike, the latter being slidably fitted upon a door-frame or casing, in combination with means including one of said locking bolts for looking said strike in a fixed position whereby it may be unlocked and removed and replaced without removing a nail or screw or injuring the framework when the door is locked.

11. A movable lock strike, adapted to be slidably fitted upon a door frame and consisting of a strike plate having a marginal guard flange extending from the inner side thereof, a plate extending from said inner side substantially parallel with said flange and having apertured lugs mounted thereon and substantially at right angles thereto, and adapted to receive a locking bolt whereby said strike plate may be looked in position to receive the locking bolt of a door look.

In testimony whereof we aflix our signatures in the presence of two witnesses.

JOSIAH M. MATI-IER. JNO. FRANK STEELE. W'itnesses:

J. A. SEWELL, D. C. WALKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of ZPatents, Washington, D. 0. 

